Compress JPG Images
JPEG is the most widely used image format on the web, but photos from modern cameras can be 5–15 MB each. Our compressor uses SSIM (Structural Similarity Index) to analyze your image and find the lowest file size where quality loss is imperceptible to the human eye.
Drop JPG files or folders here, or
Up to 20 files, or 50 from a folder. 50 MB each.
Ctrl+Z undo · Ctrl+Y redo
Remove EXIF, GPS, and other metadata for smaller files
Total savings:
( saved)
Need to compress other formats? Full compressor
How JPG Compression Works
JPG compression works by adjusting the quantization tables used during JPEG encoding. Higher quality means finer color detail is preserved, but the file is larger. Our engine performs a binary search across quality levels (10–98), computing SSIM at each step to find the optimal trade-off. For most photos, this achieves 60–80% savings with SSIM scores above 0.95.
Tips for JPG Compression
- Photos from smartphones typically compress best — expect 60-80% savings
- Already-compressed JPGs may see smaller savings (10-30%)
- Strip metadata to save an additional 10-50 KB per image
- For web use, Medium quality level gives the best size-to-quality ratio
JPG Compression FAQ
How much can I compress a JPG?
Typically 40–80%, depending on the original quality setting and image content. Photos with lots of detail compress more than simple graphics.
Will compression affect my JPG quality?
With Smart Quality mode, the difference is imperceptible. We use SSIM analysis to guarantee the compressed image looks identical to the original at normal viewing distance.
Can I compress a JPG to a specific file size?
Yes! Use Target Size mode and enter your desired file size in KB. We'll find the highest quality that fits your budget.